TY  - JOUR
AB  - Purpose– The purpose of this paper is to develop a methodology for in situ stress intensity factor (SIF) determination that can be used for the analysis of cracked structures. The technique is based on digital image correlation (DIC) combined with an overdetermined algorithm.Design/methodology/approach– The linear overdeterministic algorithm for calculating the SIF based on stress values around the crack tip is applied to a strain field obtained by DIC.Findings– As long as the image quality is sufficiently high, a good accuracy can be obtained for the measured SIF. The crack tip can be automatically detected based on the same strain field. The use of the strain field instead of the displacement field, eliminates problems related to the rigid body motion of the analysed structure.Practical implications– In future works, based on the applied techniques, the SIF of complex cracked plane stress structures can be accurately determined in real engineering applications.Originality/value– The paper demonstrates application of known techniques, refined for other applications, also the use of stress field for SIF overdeterministic calculations.
VL  - 1
IS  - 4
SN  - 1757-9864
DO  - 10.1108/17579861011099178
UR  - https://doi.org/10.1108/17579861011099178
AU  - Richter‐Trummer V.
AU  - Moreira P.M.G.P.
AU  - Pastrama S.D.
AU  - Vaz M.A.P.
AU  - de Castro P.M.S.T.
ED  - Paulo M. S. T. de Castro
ED  - Gustavo V. Guinea
PY  - 2010
Y1  - 2010/01/01
TI  - Methodology for in situ stress intensity factor determination on cracked structures by digital image correlation
T2  - International Journal of Structural Integrity
PB  - Emerald Group Publishing Limited
SP  - 344
EP  - 357
Y2  - 2024/04/18
ER  -